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Heart|Lab Grown|IGI

2.78ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG825660142

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG825660142

Diamond specifications and retailer prices

From $1,953 AUD
$1,372 USD
As of October 27, 2026
Save $13,833 AUD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,786 AUD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 2.78ct lab-grown heart diamond

This 2.78ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG825660142 or 825660142. Listed at 19 retailers as of October 27, 2026, with prices from $1,953 to $15,786, a $13,833 spread on the same certified stone. Brilliant Earth lists it at $15,786. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.78
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825660142
Dimensions9.70 × 8.55 × 5.63 mm
L/W Ratio1.13
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.70 mm8.55 mm2.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825660142
Side View
Table 61.0%Crown 38.1°Girdle: Slightly ThickPavilion 37.4°Culet: NoneDepth 58.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $15,786 AUD|Low: $1,953 AUD|High: $15,857 AUD|Avg: $6,346 AUD|-0.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 6$1,953 AUD
Retailer 18$2,125 AUD
Retailer 15$2,266 AUD
Retailer 3$2,267 AUD
Retailer 13$2,512 AUD
Retailer 5$2,568 AUD
Retailer 2$3,196 AUD
Retailer 11$3,308 AUD
Retailer 8$3,580 AUD
Retailer 9$3,845 AUD
Retailer 16$4,246 AUD
Retailer 17$4,482 AUD
Retailer 12$5,845 AUD
Retailer 7$6,106 AUD
Retailer 14$7,289 AUD
Retailer 10$7,964 AUD
Retailer 19$7,965 AUD
Retailer 4$8,666 AUD
Brilliant Earth$15,786 AUD

33 data points across 19 retailers

19 retailers$1,953 AUD to $15,786 AUD

A
Cheapest Retailer
-
$1,953 AUD
$1,372 USD
A
Retailer 2
-
$2,125 AUD
$1,493 USD
View
A
Retailer 3
-
$2,266 AUD
$1,592 USD
View
A
Retailer 4
-
$2,267 AUD
$1,593 USD
View
Final sale: no returns
A
Retailer 5
-
$2,512 AUD
$1,765 USD
View
A
Retailer 6
-
$2,568 AUD
$1,804 USD
View
A
Retailer 7
-
$3,196 AUD
£1,768 GBP
View
Retailer 8
-
$3,308 AUD
$2,324 USD
View
Price last confirmed 19 days ago
A
Retailer 9
-
$3,580 AUD
$2,515 USD
View
A
Retailer 10
-
$3,845 AUD
$2,701 USD
View
A
Retailer 11
-
$4,246 AUD
$2,983 USD
View
B+
Retailer 12
-
$4,482 AUD
$3,149 USD
View
B+
Retailer 13
-
$5,845 AUD
ZAR 66,342 ZAR
View
B+
Retailer 14
-
$6,106 AUD
$4,290 USD
View
B+
Retailer 15
-
$7,289 AUD
£4,032 GBP
View
B+
Retailer 16
-
$7,964 AUD
SGD 7,561 SGD
View
B+
Retailer 17
-
$7,965 AUD
$5,596 USD
View
B+
Retailer 18
-
$8,666 AUD
$6,088 USD
View
Most Expensive
B
Brilliant Earth
21434147A · Oct 28
$15,786 AUD
$11,090 USD
View
18 more retailers have this diamond
Prices start from $1,953 AUDSave up to $13,833 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
2.78ct Heart
$1,953 AUD